A extends the line segment AB to C B. Find the arithmetic square root of 9. C. Are all positive numbers greater than zero? Equal congruent angles.

2. The following statement is defined as (c)

A. The shortest line segment between two points B. The sum of two sides of a triangle is greater than the third side C. The straight line passing through the midpoint of the line segment and perpendicular to the line segment is called the middle perpendicular D. Only one straight line outside the straight line is parallel to the known straight line.

3. The following statement is true (A)

A. every theorem is correct. B. every proposition is correct. C. false propositions are not necessarily wrong. D. true propositions are not necessarily correct.

4. The proposition "Two straight lines intersect with only one intersection point" is based on the premise that (two straight lines intersect) and the conclusion is (only one intersection point).

5. "A number divisible by 5, its single digit is 5" is a (false) proposition (fill in "true" or "false").

6. if a//b, b//c, then a (//) C.

7. The triangle whose outer angle is smaller than its adjacent inner angle is (C).

A. acute triangle B. right triangle C. obtuse triangle D. arbitrary triangle

8. Among the following propositions, the correct proposition is (D)

A. Decimals are rational numbers B. Infinite decimals are irrational numbers C. Points on the number axis correspond to rational numbers one by one D. Points on the number axis correspond to real numbers one by one.

9. The proposition "Two straight lines perpendicular to the same straight line are parallel to each other" is set to (D)

A. vertical B. two straight lines C. same straight line D. two straight lines are perpendicular to the same straight line

Can you solve your problem?